Spot-cleaner.



G. MALMROS & P. F.`ADAMS.

- SPOT CLEANER.

APPLIOATION FILED DEU. 20, 1909.

Patented Sept. 13,1910.

Na-ra UNITED STATES PATENT OFFICE.

GUSTAF MALMROS AND FRANK F. ADAMS, 0F NEW YORK, N. Y.

spor-CLEANER.,

To all 'whom 'it may concern:

Be it known that we, GUsrAr Mamrnos, a subject of the King of Sweden,residing at New York, in the county of New York and State of New York,and FRANK F. Annals, a citizen of the Dominion of Canada, residing atNew York, in the county of New York and State of New York, have inventeda certain new and useful Improvement in Spot-Cleaners, of which thefollowing is a specification.

Our invention relates to a new and useful improvement in spot cleaners,and has for its object to provide a simple and effective device by whichvarious kinds of compounds or chemicals may be conveniently and directlyapplied to ink, rust or stain spots in fabrics, and the compound orchemical be forced through the fabric by compressed air thus quickly andeffectnally removing suc i spots and stains.

A further object of our invention is to provide a convenient holder forthe desired compound or chemical so that the contents thereof will beautomatically fed to the fabric.

I/Vith these ends in view, this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, we will describeits construction in detail, referring by letter to the accompanying`drawing forming a part of this specification, in which- Figure l is anoutside view of our improved device. Fig. 2, a central longitudinalsection thereof, and Fig. 3, an enlarged cross section at the line .fr-mof Fig. 2.

In carrying out our invention as here embodied, A represents a barrel ofthe general form of a pump barrel, the lower end of which is providedwith a compressible ring B, of rubber or other suitable material, inorder that when itl is pressed against the fabric to be cleaned, or thefabric pressed against it, an airtight joint will be made, so thatthereafter the air forced from the barrel will be compelled to passdirectly through that portion of the fabric inclosed by the ring.

C represents a piston, which is adapted to fit and slide within thebarrel A, and this Specification of Letters Patent.

Application filed December 20, 1909.

Patented Sept. 13, 1910.

Serial No. 534,095.

piston is in the form of a tube in order that it may serve as a holderfor the liquid to be used in the cleaning process, and to vthe inner endof this piston is secured the packing disk l) to prevent the escape ofair when the piston is forced downward.

E is a valve' of any suitable material, which is secured to the stem F,the latter projecting downward through the valve opening in the disk Eand having the cross strip H secured upon its lower end by the nut I.This cross strip is of sufficient length to contact with the shoulderformed by the inwardly curved section J formed in the barrel, and whencoming in contact with this section the strip will force the valve Eupward against the action of the springs G formed with this strip, thuspermitting a small portion of the contents of the piston C to escapethrough the valve opening, for the purpose to be hereinafter set forth.

In order that air may be admitted to the barrel when the piston is drawnupward, a check valve K is located upon the side of said barrel, and soarranged as to permit the air to flow inward upon the upward stroke ofthe piston, but prevent its escape upon the downward stroke of thelatter.

The upper end of the piston is threaded, as indicated at L, to receivethe threaded end of the handle M, the latter preferably being of wood orhard rubber, and a packing ring or gasket N is interposed between theupper edge of the piston and the shoulder of the handle, so as to form atight joint.

Vhile We do not wish to be limited to any particular material of whichthe various parts of the device are made, yet in practice, we have foundthat white metal is well adapted for the construction of the piston.

From the foregoing description, the operation of our improvement will beas follows The li uid adapted for removing the particular kin( of spotsor stains to be treated is poured into the piston, which serves as aholder, by unscrewing the handle, after which the handle is screwed intoplace so as to form a tight joint, against the packing ring N. Thefabric to be treated is placed against the compressible ring B,preferably with another layer of fabric backing it up, when by forcingthe piston downward the air compressed in the barrel will be forcedthrough the goods, driving out the dust or loose dirt, and when thepiston reaches the lower limit of its stroke, the cross strip H willcontact with the shoulder J, opening the valve E, as before describedand permitting a small quantity of the cleaning liquid to iow downwardupon the fabric, and at the next downward stroke of the piston thisliquid will be forced through the fabric, removing the spot or staintherefrom. This operation may be repeated as often as necessary tocompletely remove the stain.

Various kinds of liquids may be used for various kinds of stains, as forinstance, those made' by ink, grease or iron rust, but the action of thedevice in each case will be the same as above described.

The shoulder O on the handle coming in contact with the upper edge ofthe barrel will limit the downward movement of the piston.

The advantages of our improved device is its simplicity and directnesswith which it applies extracting liquid to the section of the fabric tobe operated upon.

Having thus fully7 described our invention, what we claim as new anduseful, is-

l. In a cleaning device, the combination of a barrel open at both ends,a tubular piston fitted to slide in said barrel, said piston having anopening in its bottom, a packing disk carried by the lower end of thepiston, a valve adapted to open and close the opening in the bottom ofthe piston, a stem projecting downward from the valve, a cross striphaving springs, secured to the lower end of the stem, adapted to contactwith a shoulder formed -upon the barrel, a handle having a shankthreaded into the upper end of the piston, and a gasket interposedbetween the shoulder formed upon the handle and the upper edge of thepiston, as and for the purpose set forth.

2. In a cleaning device, a barrel open at bot-h ends, a compressiblering attached to the lower end of the barrel, an internal shoulderformed upon the barrel, a hollow pist-on adapted to slide in the barrel,said piston having an opening in its bottom, a packing disk secured tothe lower end of the piston, a valve adapted to normally close saidopening, a stem projecting from the valve through said opening, a crossstrip secured to the lower end of the stem, its ends having springs,said cross strip being adapted to strike against the shoulders formedupon the barrel, a handle provided with a shoulder, the shank of whichis threaded into the upper end of the piston, a gasket interposedbetween the shoulder formed upon the handle and the upper edge of thepiston, and a check valve located below the limit of the downward strokeof the piston, as and for the purpose set forth.

A cleaner of the character described, consisting of a barrel, a hollowpiston adapted to slide in said barrel, said piston acting as a holderfor the liquid to be used, a spring actuated valve located in the lowerend of the piston, a handle adapted to seal the upper end of the piston,and means for opening the valve upon the downward stroke of the piston,as specied.

4. A cleaner of the character described, consisting of a barrel, ahollow piston adapted to slide in said barrel, said piston acting as aholder for the liquid to be used, a spring actuated valve located in thelower end of the piston, a handle adapted to seal the upper end of thepiston, means for opening the valve upon the downward stroke of thepiston, and a check valve for admitting air to the barrel below thepiston, upon the upward stroke of the latter, as specified.

In testimony whereof,- we have hereunto atiixed our signatures in thepresence of two subscribing witnesses.

GUSTAF MALMRos. FRANK F. Ani-rus.

Vitnesses RICHARD CONDON, I. HEIBERG.

